identifier

noun

iden·​ti·​fi·​er ī-ˈden-tə-ˌfī(-ə)r How to pronounce identifier (audio)
ə-
: one that identifies

Examples of identifier in a Sentence

Recent Examples on the Web Under federal law, every gun in the U.S. must have a serial number — an identifier unique to the weapon's manufacturer that the ATF can use to trace it. Chris Hacker, CBS News, 16 May 2024 Other unmarked vehicles are used for traffic enforcement and SWAT units, with unmarked vehicles appearing identical to marked patrol cars, with the exception of the outside police identifiers. Rey Covarrubias Jr., The Arizona Republic, 15 May 2024 See all Example Sentences for identifier 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'identifier.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1807, in the meaning defined above

Time Traveler
The first known use of identifier was in 1807

Dictionary Entries Near identifier

Cite this Entry

“Identifier.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/identifier. Accessed 29 May. 2024.

More from Merriam-Webster on identifier

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!